F51.01

Primary insomnia

Billable code

This code does not map to a risk-adjusting HCC in the loaded models.

Coding notes

Excludes 1 never coded together · Excludes 2 may co-exist

This code · F51.01
Synonyms

Idiopathic insomnia

Inherited from F51.0Insomnia not due to a substance or known physiol condition
Excludes 2

alcohol related insomnia (F10.182, F10.282, F10.982) drug-related insomnia (F11.182, F11.282, F11.982, F13.182, F13.282, F13.982, F14.182, F14.282, F14.982, F15.182, F15.282, F15.982, F19.182, F19.282, F19.982) insomnia NOS (G47.0-) insomnia due to known physiological condition (G47.0-) organic insomnia (G47.0-) sleep deprivation (Z72.820)

Inherited from F51Sleep disorders not due to a substance or known physiol cond
Excludes 2

organic sleep disorders (G47.-)

Inherited from chapter 5Mental, Behavioral and Neurodevelopmental disorders
Includes

disorders of psychological development

Excludes 2

symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)

Official Guidelines for F51.01

FY 2026 ›